C++ impact and status on Exercism

C++

203,443 students

About C++

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639 contributors

2056 mentors

C++ Track Management

This page provides the Exercism community with the information and tools needed to manage the C++ track.

Students

203,493

Submissions

2,913,011

Mentoring Discussions

14,731

The C++ track needs attention ⚠️

Building

C++ syllabus

Learn More

Help create the track syllabus: is a set of concepts and learning exercises put together to teach foundational elements of the programming language.

Next goal: Create a complete syllabus with at least 20 concepts. Find out more.

19 concepts being taught

Includes

15,728 learnt

Strings

15,728 learnt

Basics

27,520 learnt

Numbers

11,728 learnt

Namespaces

17,924 learnt

Booleans

18,464 learnt

Comparisons

9,926 learnt

If Statements

9,926 learnt

Arrays and Vectors

6,103 learnt

Loops

8,114 learnt

Classes

7,132 learnt

References

4,725 learnt

Enumerations

5,208 learnt

Switch Statements

5,208 learnt

Headers

3,591 learnt

Functions

2,789 learnt

Auto

1,656 learnt

Smart Pointers

1,656 learnt

Pointers

2,221 learnt

15 active learning exercises

Started

Attempts

Completions

Mentoring requests

Log Levels

23,976

162,491 (avg. 6.8)

15,728 (65.6%)

441 (1.8%)

Lasagna

38,933

157,627 (avg. 4.0)

27,520 (70.7%)

398 (1.0%)

Freelancer Rates

13,413

110,843 (avg. 8.3)

11,728 (87.4%)

133 (1.0%)

Last Will

21,798

113,321 (avg. 5.2)

17,924 (82.2%)

202 (0.9%)

Pacman Rules

20,420

104,673 (avg. 5.1)

18,464 (90.4%)

188 (0.9%)

Vehicle Purchase

10,542

64,868 (avg. 6.2)

9,926 (94.2%)

71 (0.7%)

Making the Grade

7,412

111,716 (avg. 15.1)

6,103 (82.3%)

173 (2.3%)

Interest is interesting

8,777

62,807 (avg. 7.2)

8,114 (92.4%)

76 (0.9%)

Ellen's Alien Game

7,779

57,942 (avg. 7.4)

7,132 (91.7%)

89 (1.1%)

Election Day

5,299

53,053 (avg. 10.0)

4,725 (89.2%)

65 (1.2%)

Troll the Trolls

5,844

53,679 (avg. 9.2)

5,208 (89.1%)

107 (1.8%)

Doctor Data

4,564

60,903 (avg. 13.3)

3,591 (78.7%)

75 (1.6%)

lasagna-master

3,241

40,106 (avg. 12.4)

2,789 (86.1%)

39 (1.2%)

Power of Troy

2,129

23,521 (avg. 11.0)

1,656 (77.8%)

19 (0.9%)

Speedywagon Foundation

2,655

21,236 (avg. 8.0)

2,221 (83.7%)

17 (0.6%)

Practice Exercises

Learn More

Practice Exercises are exercises designed to allow students to solve an arbitrary problem, with the aim of them making use of the concepts they have learned so far.

Synced primary repo: e6e47e11fb47e561d0eca71c6197163695b44caf (Updates should be instant)

Next goal: Implement 142 practice exercises. Find out more.

85 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

163,863

415,426 (avg. 2.5)

80,620 (49.2%)

12 (0.0%)

Leap

27,838

118,392 (avg. 4.3)

15,647 (56.2%)

2,565 (9.2%)

Reverse String

16,212

104,101 (avg. 6.4)

10,893 (67.2%)

1,537 (9.5%)

Space Age

11,275

82,202 (avg. 7.3)

5,332 (47.3%)

1,161 (10.3%)

Triangle

7,603

51,452 (avg. 6.8)

4,480 (58.9%)

789 (10.4%)

Grains

5,208

35,438 (avg. 6.8)

4,149 (79.7%)

615 (11.8%)

Raindrops

12,078

84,410 (avg. 7.0)

9,726 (80.5%)

747 (6.2%)

Pangram

4,298

29,954 (avg. 7.0)

3,406 (79.2%)

512 (11.9%)

Two-Fer

4,205

16,643 (avg. 4.0)

3,362 (80.0%)

92 (2.2%)

Grade School

4,226

40,151 (avg. 9.5)

2,772 (65.6%)

242 (5.7%)

Hamming

5,633

17,947 (avg. 3.2)

4,610 (81.8%)

369 (6.6%)

Nucleotide Count

4,014

20,742 (avg. 5.2)

3,039 (75.7%)

289 (7.2%)

RNA Transcription

3,262

17,150 (avg. 5.3)

2,706 (83.0%)

178 (5.5%)

Collatz Conjecture

2,882

13,070 (avg. 4.5)

2,423 (84.1%)

58 (2.0%)

Difference of Squares

5,356

19,572 (avg. 3.7)

4,737 (88.4%)

203 (3.8%)

Nth Prime

3,278

21,467 (avg. 6.5)

2,176 (66.4%)

150 (4.6%)

Queen Attack

2,819

21,827 (avg. 7.7)

1,843 (65.4%)

128 (4.5%)

Sieve

2,890

16,978 (avg. 5.9)

2,347 (81.2%)

147 (5.1%)

Say

2,246

20,757 (avg. 9.2)

1,256 (55.9%)

130 (5.8%)

Gigasecond

3,450

7,523 (avg. 2.2)

2,357 (68.3%)

260 (7.5%)

Secret Handshake

1,889

10,056 (avg. 5.3)

1,542 (81.6%)

57 (3.0%)

Allergies

3,893

27,718 (avg. 7.1)

2,422 (62.2%)

118 (3.0%)

Protein Translation

2,579

17,614 (avg. 6.8)

2,150 (83.4%)

85 (3.3%)

Sum of Multiples

2,198

8,698 (avg. 4.0)

1,705 (77.6%)

79 (3.6%)

Prime Factors

2,184

10,108 (avg. 4.6)

1,802 (82.5%)

55 (2.5%)

Robot Name

2,174

15,805 (avg. 7.3)

1,473 (67.8%)

123 (5.7%)

Clock

1,648

10,688 (avg. 6.5)

947 (57.5%)

58 (3.5%)

Meetup

1,258

5,814 (avg. 4.6)

707 (56.2%)

26 (2.1%)

Beer Song

1,320

9,020 (avg. 6.8)

1,006 (76.2%)

35 (2.7%)

Atbash Cipher

3,504

54,835 (avg. 15.6)

2,617 (74.7%)

155 (4.4%)

Trinary

2,998

22,418 (avg. 7.5)

2,633 (87.8%)

59 (2.0%)

Binary Search

1,684

12,523 (avg. 7.4)

1,154 (68.5%)

49 (2.9%)

Phone Number

1,447

8,575 (avg. 5.9)

1,037 (71.7%)

44 (3.0%)

Series

1,157

5,341 (avg. 4.6)

900 (77.8%)

27 (2.3%)

Complex Numbers

1,526

9,817 (avg. 6.4)

947 (62.1%)

32 (2.1%)

Food Chain

1,214

4,599 (avg. 3.8)

866 (71.3%)

28 (2.3%)

Roman Numerals

1,135

4,908 (avg. 4.3)

855 (75.3%)

28 (2.5%)

Bob

4,109

35,311 (avg. 8.6)

3,252 (79.1%)

291 (7.1%)

Word Count

1,737

8,334 (avg. 4.8)

1,299 (74.8%)

95 (5.5%)

Circular Buffer

1,258

10,321 (avg. 8.2)

746 (59.3%)

53 (4.2%)

Crypto Square

974

7,850 (avg. 8.1)

660 (67.8%)

24 (2.5%)

ETL

1,717

4,493 (avg. 2.6)

1,394 (81.2%)

44 (2.6%)

Matching Brackets

1,845

12,308 (avg. 6.7)

1,496 (81.1%)

43 (2.3%)

Anagram

1,856

6,583 (avg. 3.5)

1,427 (76.9%)

101 (5.4%)

Binary Search Tree

1,464

8,424 (avg. 5.8)

502 (34.3%)

49 (3.3%)

Luhn

2,437

26,815 (avg. 11.0)

2,021 (82.9%)

88 (3.6%)

Acronym

1,281

5,834 (avg. 4.6)

993 (77.5%)

32 (2.5%)

Armstrong Numbers

2,363

11,415 (avg. 4.8)

2,086 (88.3%)

48 (2.0%)

Binary

1,545

5,980 (avg. 3.9)

1,239 (80.2%)

87 (5.6%)

Hexadecimal

2,249

11,699 (avg. 5.2)

1,949 (86.7%)

88 (3.9%)

Isogram

2,753

5,928 (avg. 2.2)

1,812 (65.8%)

101 (3.7%)

Pascal's Triangle

1,100

4,249 (avg. 3.9)

844 (76.7%)

28 (2.5%)

Perfect Numbers

613

3,600 (avg. 5.9)

509 (83.0%)

7 (1.1%)

Scrabble Score

1,472

4,408 (avg. 3.0)

1,149 (78.1%)

92 (6.3%)

All Your Base

1,070

7,052 (avg. 6.6)

727 (67.9%)

50 (4.7%)

Robot Simulator

1,574

6,805 (avg. 4.3)

901 (57.2%)

55 (3.5%)

Bank Account

974

4,050 (avg. 4.2)

475 (48.8%)

43 (4.4%)

Darts

3,918

23,787 (avg. 6.1)

3,478 (88.8%)

47 (1.2%)

Largest Series Product

524

3,599 (avg. 6.9)

405 (77.3%)

12 (2.3%)

ISBN Verifier

721

4,939 (avg. 6.9)

568 (78.8%)

16 (2.2%)

Linked List

485

4,729 (avg. 9.8)

294 (60.6%)

16 (3.3%)

Simple Linked List

1,257

10,307 (avg. 8.2)

849 (67.5%)

24 (1.9%)

High Scores

1,110

8,603 (avg. 7.8)

956 (86.1%)

15 (1.4%)

Eliud's Eggs

1,409

5,529 (avg. 3.9)

1,274 (90.4%)

17 (1.2%)

Diamond

397

2,858 (avg. 7.2)

305 (76.8%)

6 (1.5%)

Run-Length Encoding

422

4,089 (avg. 9.7)

341 (80.8%)

8 (1.9%)

Rotational Cipher

1,561

11,058 (avg. 7.1)

1,399 (89.6%)

28 (1.8%)

Resistor Color

471

2,449 (avg. 5.2)

386 (82.0%)

6 (1.3%)

Resistor Color Duo

438

1,840 (avg. 4.2)

366 (83.6%)

5 (1.1%)

Flower Field

179

864 (avg. 4.8)

124 (69.3%)

2 (1.1%)

Sublist

330

2,342 (avg. 7.1)

229 (69.4%)

8 (2.4%)

Zebra Puzzle

303

1,471 (avg. 4.9)

148 (48.8%)

6 (2.0%)

List Ops

358

3,613 (avg. 10.1)

221 (61.7%)

8 (2.2%)

Knapsack

283

2,179 (avg. 7.7)

189 (66.8%)

3 (1.1%)

Two Bucket

269

2,130 (avg. 7.9)

151 (56.1%)

2 (0.7%)

Yacht

374

3,526 (avg. 9.4)

272 (72.7%)

3 (0.8%)

Kindergarten Garden

1,097

9,157 (avg. 8.3)

836 (76.2%)

25 (2.3%)

D&D Character

467

2,961 (avg. 6.3)

314 (67.2%)

6 (1.3%)

Spiral Matrix

315

2,163 (avg. 6.9)

201 (63.8%)

6 (1.9%)

Parallel Letter Frequency

365

1,581 (avg. 4.3)

189 (51.8%)

10 (2.7%)

Pig Latin

326

2,729 (avg. 8.4)

184 (56.4%)

5 (1.5%)

Rail Fence Cipher

253

1,970 (avg. 7.8)

159 (62.8%)

3 (1.2%)

Affine Cipher

164

1,768 (avg. 10.8)

112 (68.3%)

2 (1.2%)

Alphametics

417

3,841 (avg. 9.2)

136 (32.6%)

1 (0.2%)

Twelve Days

386

1,590 (avg. 4.1)

153 (39.6%)

5 (1.3%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Minesweeper

224

1,355 (avg. 6.0)

152 (67.9%)

2 (0.9%)

57 unimplemented practice exercises

Baffling Birthdays

Book Store

Bottle Song

Bowling

Camicia

Change

Connect

Conway's Game of Life

Custom Set

Dominoes

DOT DSL

Error Handling

Flatten Array

Forth

Go Counting

Grep

House

Intergalactic Transmission

Killer Sudoku Helper

Ledger

Lens Person

Line Up

Markdown

Matrix

Micro Blog

OCR Numbers

PaaS I/O

Palindrome Products

Piecing It Together

Poker

POV

Prism

Proverb

Pythagorean Triplet

Rational Numbers

React

Rectangles

Relative Distance

Resistor Color Trio

REST API

Saddle Points

Satellite

Save the Cow

SGF Parsing

Simple Cipher

Split-Second Stopwatch

Square Root

State of Tic-Tac-Toe

Strain

Swift Scheduling

Tournament

Transpose

Tree Building

Variable Length Quantity

Word Search

Wordy

Zipper

1 foregone practice exercise

Point Mutations

View data

Test Runner

Learn More

Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Current version: ea2e3010ea825d74edf1cbf0d162df883fc9ac0a (Takes up to 10 mins to deploy)

Total Test Runner Runs

2,869,588

Test Run Pass Rate

16.4% (471445)

Test Run Fail Rate

25.6% (734946)

Test Run Error Rate

58.0% (1663197)

Representer

Learn More

Build a Representer: a bit of code that has the single responsibility of taking a solution and returning a normalized representation of it.

Current version: c399f2919423aff4f1dc45aa1054fd7b7e71211a (Takes up to 10 mins to deploy)

Total Representer Runs

479,266

Total Representation Comments Made

98,086

Feedback Given Frequency

20.5%

Analyzer

Learn More

Build an Analyzer for C++: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.

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C++ Track Management

The C++ track needs attention ⚠️

C++ syllabus

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Analyzer

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